Macros

#define  DECLARE_ALIGNED(n, t, v)   t __attribute__ ((aligned (n))) v

 

#define  DECLARE_ASM_CONST(n, t, v)   static const t av_used __attribute__ ((aligned (n))) v

 

#define  av_malloc_attrib   __attribute__((__malloc__))

 

#define  av_alloc_size(...)   __attribute__((alloc_size(__VA_ARGS__)))

 

Functions

void *  av_malloc (size_t size) av_malloc_attrib 1(1)

  Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU).

 

static void *  av_malloc_array (size_t nmemb, size_t size)

 

void *  av_realloc (void *ptr, size_t size) 1(2)

  Allocate or reallocate a block of memory.

 

void *  av_realloc_f (void *ptr, size_t nelem, size_t elsize)

  Allocate or reallocate a block of memory.

 

int  av_reallocp (void *ptr, size_t size)

  Allocate or reallocate a block of memory.

 

void *  av_realloc_array (void *ptr, size_t nmemb, size_t size)

 

int  av_reallocp_array (void *ptr, size_t nmemb, size_t size)

 

void  av_free (void *ptr)

  Free a memory block which has been allocated with av_malloc(z)() or av_realloc().

 

void *  av_mallocz (size_t size) av_malloc_attrib 1(1)

  Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block.

 

void *  av_calloc (size_t nmemb, size_t size) av_malloc_attrib

  Allocate a block of nmemb * size bytes with alignment suitable for all memory accesses (including vectors if available on the CPU) and zero all the bytes of the block.

 

static void *  av_mallocz_array (size_t nmemb, size_t size)

 

char *  av_strdup (const char *s) av_malloc_attrib

  Duplicate the string s.

 

char *  av_strndup (const char *s, size_t len) av_malloc_attrib

  Duplicate a substring of the string s.

 

void *  av_memdup (const void *p, size_t size)

  Duplicate the buffer p.

 

void  av_freep (void *ptr)

  Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer pointing to it to NULL.

 

void  av_dynarray_add (void *tab_ptr, int *nb_ptr, void *elem)

  Add an element to a dynamic array.

 

int  av_dynarray_add_nofree (void *tab_ptr, int *nb_ptr, void *elem)

  Add an element to a dynamic array.

 

void *  av_dynarray2_add (void **tab_ptr, int *nb_ptr, size_t elem_size, const uint8_t *elem_data)

  Add an element of size elem_size to a dynamic array.

 

static int  av_size_mult (size_t a, size_t b, size_t *r)

  Multiply two size_t values checking for overflow.

 

void  av_max_alloc (size_t max)

  Set the maximum size that may me allocated in one block.

 

void  av_memcpy_backptr (uint8_t *dst, int back, int cnt)

  deliberately overlapping memcpy implementation

 

void *  av_fast_realloc (void *ptr, unsigned int *size, size_t min_size)

  Reallocate the given block if it is not large enough, otherwise do nothing.

 

void  av_fast_malloc (void *ptr, unsigned int *size, size_t min_size)

  Allocate a buffer, reusing the given one if large enough.